This paper focuses on the social environment of the ancient Church of Ravenna, which developed its own local liturgy. The paper also characterizes the most impor- tant components of the liturgy up to mid 5th century. The Catholic see of Ravenna developed an original liturgy, which flourished during the incumbency of Bishop Peter Chrysologus (380-450). The ancient liturgy of the 5th century Ravenna church appears to have been a bridge, which United the Catholic liturgy of the Christian Orient with the West. The pregregorian Roman liturgy constituted its most prominent component. The pregregorian liturgical rite of Ravenna was conspicuous for its Roman Character, although it had always preserved its original local elements in the 5th as well as in the 6th-9th centuries. In the 9th century the liturgy of Ravenna was Romanized in accordance with the unifying tendencies of the Gregorian reform.